EP1912567A2 - Petit dispositif a lancette - Google Patents
Petit dispositif a lancetteInfo
- Publication number
- EP1912567A2 EP1912567A2 EP06800686A EP06800686A EP1912567A2 EP 1912567 A2 EP1912567 A2 EP 1912567A2 EP 06800686 A EP06800686 A EP 06800686A EP 06800686 A EP06800686 A EP 06800686A EP 1912567 A2 EP1912567 A2 EP 1912567A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- spring
- lancing
- drive
- lancing mechanism
- damping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
- A61B5/15101—Details
- A61B5/15115—Driving means for propelling the piercing element to pierce the skin, e.g. comprising mechanisms based on shape memory alloys, magnetism, solenoids, piezoelectric effect, biased elements, resilient elements, vacuum or compressed fluids
- A61B5/15117—Driving means for propelling the piercing element to pierce the skin, e.g. comprising mechanisms based on shape memory alloys, magnetism, solenoids, piezoelectric effect, biased elements, resilient elements, vacuum or compressed fluids comprising biased elements, resilient elements or a spring, e.g. a helical spring, leaf spring, or elastic strap
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/14—Devices for taking samples of blood ; Measuring characteristics of blood in vivo, e.g. gas concentration within the blood, pH-value of blood
- A61B5/1405—Devices for taking blood samples
- A61B5/1411—Devices for taking blood samples by percutaneous method, e.g. by lancet
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150015—Source of blood
- A61B5/150022—Source of blood for capillary blood or interstitial fluid
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150053—Details for enhanced collection of blood or interstitial fluid at the sample site, e.g. by applying compression, heat, vibration, ultrasound, suction or vacuum to tissue; for reduction of pain or discomfort; Skin piercing elements, e.g. blades, needles, lancets or canulas, with adjustable piercing speed
- A61B5/150106—Means for reducing pain or discomfort applied before puncturing; desensitising the skin at the location where body is to be pierced
- A61B5/150152—Means for reducing pain or discomfort applied before puncturing; desensitising the skin at the location where body is to be pierced by an adequate mechanical impact on the puncturing location
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150175—Adjustment of penetration depth
- A61B5/150183—Depth adjustment mechanism using end caps mounted at the distal end of the sampling device, i.e. the end-caps are adjustably positioned relative to the piercing device housing for example by rotating or screwing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150206—Construction or design features not otherwise provided for; manufacturing or production; packages; sterilisation of piercing element, piercing device or sampling device
- A61B5/150259—Improved gripping, e.g. with high friction pattern or projections on the housing surface or an ergonometric shape
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150381—Design of piercing elements
- A61B5/150412—Pointed piercing elements, e.g. needles, lancets for piercing the skin
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150381—Design of piercing elements
- A61B5/150503—Single-ended needles
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
- A61B5/150541—Breakable protectors, e.g. caps, shields or sleeves, i.e. protectors separated destructively, e.g. by breaking a connecting area
- A61B5/150549—Protectors removed by rotational movement, e.g. torsion or screwing
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
- A61B5/15058—Joining techniques used for protective means
- A61B5/150618—Integrally moulded protectors, e.g. protectors simultaneously moulded together with a further component, e.g. a hub, of the piercing element
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
- A61B5/150694—Procedure for removing protection means at the time of piercing
- A61B5/150717—Procedure for removing protection means at the time of piercing manually removed
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150801—Means for facilitating use, e.g. by people with impaired vision; means for indicating when used correctly or incorrectly; means for alarming
- A61B5/150824—Means for facilitating use, e.g. by people with impaired vision; means for indicating when used correctly or incorrectly; means for alarming by visual feedback
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
- A61B5/15101—Details
- A61B5/15103—Piercing procedure
- A61B5/15107—Piercing being assisted by a triggering mechanism
- A61B5/15113—Manually triggered, i.e. the triggering requires a deliberate action by the user such as pressing a drive button
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
- A61B5/15186—Devices loaded with a single lancet, i.e. a single lancet with or without a casing is loaded into a reusable drive device and then discarded after use; drive devices reloadable for multiple use
- A61B5/15188—Constructional features of reusable driving devices
- A61B5/1519—Constructional features of reusable driving devices comprising driving means, e.g. a spring, for propelling the piercing unit
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
- A61B5/15186—Devices loaded with a single lancet, i.e. a single lancet with or without a casing is loaded into a reusable drive device and then discarded after use; drive devices reloadable for multiple use
- A61B5/15188—Constructional features of reusable driving devices
- A61B5/15192—Constructional features of reusable driving devices comprising driving means, e.g. a spring, for retracting the lancet unit into the driving device housing
- A61B5/15194—Constructional features of reusable driving devices comprising driving means, e.g. a spring, for retracting the lancet unit into the driving device housing fully automatically retracted, i.e. the retraction does not require a deliberate action by the user, e.g. by terminating the contact with the patient's skin
Definitions
- the present invention relates generally to lancing devices and, more particularly, to a multi-spring, compact lancing device having at least one of the springs located within a second of the springs.
- One method of obtaining a body fluid sample is to use a lancing device.
- the whole blood sample may then be used to determine the glucose concentration of an individual.
- Existing lancing devices use a lancet to pierce the tissue of the skin, allowing a blood sample to form on the skin's surface.
- lancing devices hold the lancet within them when the lancet is not in use, so as to shield the user from injury as well as to assist in preventing or inhibiting contamination.
- the whole blood sample is often obtained by piercing the skin of a test subject.
- existing lancing devices may cause increased pain to many individuals by failing to properly dampen the lancet after initially piercing the skin. This may result in multiple punctures to the individual's skin, increasing the discomfort to the user.
- excessive damping can reduce the lancet's force and adversely effect the puncture depth, causing insufficient sample size and the need to lance again.
- a lancing device or integrated meter that incorporates a lancing device
- these devices are sometimes transported by a user in a purse or pants pocket.
- a user may desire a smaller device that requires less space than classic devices.
- a lancing mechanism adapted to move between a resting position, a cocking position, and a puncture position.
- the lancing mechanism comprises a lancet holder, a shaft, at least one drive spring, and at least one damping spring.
- the lancet holder is attached to a shaft and is adapted to receive a lancet.
- the at least one drive spring surrounds at least a portion of the shaft.
- the at least one drive spring is adapted to drive the lancing mechanism from the cocking position to the puncture position.
- the at least one damping spring is adapted to move the lancing mechanism from the puncture position to the resting position.
- the at least one drive spring is located at least partially within the at least one damping spring.
- a lancing mechanism adapted to move between a resting position, a cocking position, and a puncture position.
- the lancing mechanism comprises a lancet holder, a shaft, at least one damping spring, and at least one drive spring.
- the lancet holder is attached to the shaft and is adapted to receive a lancet.
- the at least one damping spring surrounds at least a portion of the shaft.
- the at least one damping spring is adapted to move the lancing mechanism from the puncture position to the resting position.
- the at least one drive spring is adapted to drive the lancing mechanism from the cocking position to the puncture position.
- the at least one damping spring is located at least partially within the at least one drive spring.
- a lancing device comprises a main housing and a moveable housing.
- the main housing includes a spring stop and forms an inner cavity enclosing a portion of a lancing mechanism.
- the lancing mechanism includes a lancet holder adapted to receive a lancet and a shaft attached to the lancet holder.
- the lancing mechanism further includes at least one drive spring detached from the spring stop.
- the at least one drive spring is adapted to drive the lancing mechanism from a cocking position to a puncture position.
- the lancing mechanism further includes at least one damping spring attached to the spring stop.
- the at least one damping spring is adapted to move the lancing mechanism from the puncture position to a resting position.
- the movable housing is adjacent the main housing and is adapted to move the lancing mechanism from the resting position to the cocking position.
- FIG. Ia is a top exploded view of a lancing device, according to one embodiment of the present invention.
- FIG. Ib is a bottom exploded view of the lancing device of FIG. Ia.
- FIG. 2 is a side view of the lancing device of FIGS. la-b.
- FIG. 3 is a partial, cross-sectional, top view of the lancing device of FIG. 2 in a resting position.
- FIG. 4 is a partial, cross-sectional, top view of the lancing device of FIG. 2 in a cocking position.
- FIG. 5 is a perspective view of a lancing mechanism, according to one embodiment of the present invention.
- FIG. 6 is partial-perspective view of the lancing mechanism of FIG. 5 with a drive spring and a damping spring surrounding a shaft, according to one embodiment.
- FIG. 7a is a schematic cross-sectional view of a lancing device in a cocking position, according to one embodiment of the present invention.
- FIG. 7b is a schematic cross-sectional view of the lancing device of FIG. 7a in a puncture position.
- FIG. 7c is a schematic cross-sectional view of the lancing device of FIG. 7a in a resting position.
- FIG. 8a is a schematic cross-sectional view of a lancing device having a plurality of damping springs, according to one embodiment.
- FIG. 8b is a schematic cross-sectional view of a lancing device having a plurality of drive springs, according to another embodiment.
- the present invention is directed to a lancet-release mechanism adapted to be incorporated into a stand-alone lancing device or into a lancing device that is incorporated into a meter or similar testing device.
- the lancing device is adapted to receive a lancet for use in drawing a body fluid from a test subject.
- the body fluid generally contains at least one analyte that may then be examined to determine its concentration in the body fluid sample.
- Lancing devices and lancets may be used to produce a blood or body fluid sample from a test subject. This sample may then be analyzed with a meter and test strip, or similar devices, to determine the concentration of the analyte to be examined.
- Examples of the types of analytes that may be collected with a lancing device include glucose, lipid profiles (e.g., cholesterol, triglycerides, LDL and HDL), microalbumin, hemoglobin Aic, fructose, lactate, or bilirubin.
- the lancing device 10 has a main housing 12 and a movable housing 14 that is movable relative to the main housing 12.
- the main housing 12 and the movable housing 14 each forms an inner cavity, respectively.
- An endcap support 16 is connected to the main housing 12 on the testing end of the lancing device 10.
- An endcap 18 may be removably attached to the endcap support 16. When attached, the endcap 18 is retained on the endcap support 16 by a pair of support arms 20a-b integrally formed with the endcap support 16.
- the movable housing 14 is pulled away from the main housing 12 to move an internal lancing mechanism 29 (as best illustrated in FIG. 5) to a cocked position, and then a pushbutton 22 (FIG. 1) is pushed to actuate the lancing mechanism 29 so that a sharp tip of a lancet is forced through an aperture (not shown) in the endcap 18.
- the lancing device 10 may be provided with a number of different endcaps 18, each having a different width, to facilitate the formation of skin punctures of various depths.
- the endcap 18 may include an adjustable dial 24 for allowing punctures of different depths to be performed utilizing a single endcap 18.
- FIG. 3 a cross-sectional view of a portion of the lancing device 10 is illustrated with the endcap 18 and endcap support 16 not shown.
- a lancet assembly 30 having a lancet body 32 and a lance 34 (FIG. 3) is received within an internal cylindrical aperture 58 (FIG. 5) formed in a generally cup-shaped lancet holder 36.
- the lancet holder 36 includes one or more angled stop member.
- the lancet holder 36 includes two angled stop members 60, 62 that are located on opposite sides of the lancet holder 36.
- the lancet holder 36 is connected to an elongated shaft 38 by being integrally formed therewith.
- the shaft 38 has an enlarged end 40 that is supported within the movable housing 14.
- at least one spring is disposed around the shaft 38 between the lancet holder 36 and a spring stop 44 integrally formed with the main housing 12.
- a drive spring 43 is provided according to some embodiments.
- the drive spring 43 is adapted to engage the lancet holder 36 and move the lancing mechanism 29 from the cocked position to the puncture position.
- the drive spring 43 is located within a damping spring 42.
- the damping spring 42 is adapted to dampen the lancing mechanism 29 as the lancing mechanism 29 returns from the puncture position to the resting position.
- the drive spring 43 has a diameter that is sufficiently small to insert into a casing 45 extending from the lancet holder 36.
- the casing 45 is adapted to separate at least a portion of the drive spring 43 from at least a portion of the damping spring 42. It should be noted at this point that in various embodiments of the present invention, the quantity and location of the damping and drive springs can vary. The operation and configuration of several of these embodiments will be explained in greater detail with respect to FIGS. 6-8b.
- the movable housing 14 has a pair of elongate spring trays 48 integrally formed therewith.
- a return spring 50 is disposed within each of the spring trays 48, a first end of each return spring 50 being disposed against an internal surface of the spring tray 48 and a second end of each return spring 50 being disposed against a spring stop 52 integrally formed with the main housing 12.
- the spring stops 52 extend into the spring trays 48 through an elongate slot 54 (see FIG. 4) formed in the bottom portion of each tray 48.
- FIG. 3 illustrates the interior of the lancing device 10 when the lancing device 10 is not in use. In this position, the lancet holder 36 is disposed in a resting position between a puncture position and a cocked position.
- FIG. 4 illustrates the interior of the lancing device 10 (the lancet assembly 30 is not shown) when the lancet holder 36 is in a cocked position in which the movable housing 14 has been pulled away from the main housing 12.
- the movable housing 14 is pulled away from the main housing 12 in the direction of Arrow A.
- the movable housing 14 continues to be pulled — against the force of the drive spring 43 — until the angled stop members 60, 62 formed on the lancet holder 36 move past (to the right of as illustrated in FIG. 4) at least one retaining arm (not shown) formed on the housing side of the push button 22.
- the at least one retaining arm extends into the housing 12.
- the at least one retaining arm is biased so that it makes contact with one or more of the angled stop members 60, 62 formed on the lancet holder 36.
- a spring mechanism for example, an elastically-deformable foam material — may be disposed between the pushbutton 22 and a portion of the main housing 12 to bias the pushbutton 22 to its non-actuated position, wherein the at least one retaining arm is able to engage one or both of the angled stop members 60, 62.
- the lancet holder 36 is guided between its resting and cocked positions by a guide rib 82 (FIG. 5) formed on the bottom portion of the lancet holder 36 that rides within a groove 84 (FIG. 4) formed between a pair of raised guide rails 86 formed in a bottom interior portion of the main housing 12.
- the endcap 18 is attached to the lancing device 10.
- the lancet holder 36 may be in the cocked position at the time the endcap 18 is attached or may be cocked once the endcap 18 is in position.
- the endcap 18 is then placed firmly against the skin where the puncture is to be made, and the pushbutton 22 is depressed. Depressing the pushbutton 22 causes the at least one retaining arm (not shown) to release the angled stop members 60, 62 formed on the lancet holder 36.
- the lancet holder 36 is no longer prevented from moving in the direction of Arrow B by the contact of the at least one retaining arm with one or both of the angled stop members 60, 62.
- the drive spring 43 Upon release of the lancet holder 36 as described above, the drive spring 43 will force the lancet holder 36 in the direction of Arrow B until the sharp point of the lance 34 (FIG. 3) passes through the aperture (not shown) in the endcap 18 to make the puncture.
- the damping spring 42 When the puncture is made, the damping spring 42 will be in a stretched position, and after the puncture is made, the contraction of the damping spring 42 draws the lancet holder 36 back towards its resting position shown in FIG. 3.
- FIG. 5 a perspective view of the lancing mechanism 29 is illustrated, according to one embodiment of the present invention.
- the lancet mechanism 29 includes the lancet holder 36 adapted to receive the lancet assembly 30.
- the lancet assembly 30 is disposed within the generally cylindrical aperture formed in the lancet holder 36.
- the lancet assembly 30 is shown with a protective cap 90 that has a portion that is integrally formed with the lancet body 32 and which covers the sharp point of the lance 34.
- the lancet body 32 of a new lancet assembly 30 is inserted into the cylindrical aperture disposed in the lancet holder 36, and then the protective cap 90 is twisted off of the lancet assembly 30, in the direction of the Arrow C shown in FIG. 5.
- FIG. 6 a portion of the lancing mechanism 29 illustrated in FIG. 5 is illustrated according to one embodiment.
- the shaft 38 of the lancing mechanism 29 is partially surrounded by both the drive spring 43, the damping spring 42, and the casing 45.
- the drive spring 43 is located within the damping spring 42 and is partially separated from the damping spring 42 by the casing 45.
- the damping spring 42 is attached to the lancet holder 36 while the drive spring 43 may or may not be attached to the lancet holder 36, in alternative embodiments.
- damping systems that can be incorporated into the above-described lancing device 10 are further described according to the various embodiments of the present invention.
- damping systems assist in preventing or inhibiting the lancing mechanism 29 from causing a second, unintended skin puncture to be made by the lancet assembly 30.
- the damping system includes a plurality of springs in which a first spring is located within at least a second spring.
- the term "within” is defined as either “partially enclosed by” (such as the two-spring embodiment described above) or "between” (such as the three-spring embodiment described below with respect to FIGS. 8a-b).
- FIGS. 7a-c a damping system incorporating a single damping spring 42 and a single drive spring 43 is illustrated.
- the damping system is incorporated into the lancing device 10 and is adapted to both drive the lancing mechanism 29 from the cocked position (illustrated in FIG. 7a) to the puncture position (illustrated in FIG. 7b) and to damp the lancing mechanism 29 as the lancing mechanism 29 moves from the puncture position to the resting position (illustrated in FIG. 7c).
- the spring rate of the drive spring 43 is much higher than the spring rate of the damping spring. 42.
- the damping spring 42 is attached to both the lancet holder 36 and the spring stop 44.
- the damping spring 42 is an extension spring such that the firing of the lancing device 10 causes the drive spring 43 to move the lancing mechanism 29 from the cocked position to the puncture position. This movement extends the damping spring 42 from its resting state. After the drive spring 43 has substantially decompressed, the return force of the extended damping spring 42 overtakes the drive force of the drive spring 43 and causes the lancing mechanism 29 to return to the resting position.
- the drive spring 43 can be attached to the lancet holder 36 or may be entirely free-floating.
- the drive spring 43 is attached to the lancet holder 36 only.
- the drive spring 43 fully decompresses it breaks contact with the spring stop 44.
- the damping spring 42 to return the lancing mechanism 29 to the resting position without substantial assistance or impedance by the drive spring 43.
- the lancing mechanism 29 is in the resting position when the damping spring 42 has caused the drive spring 43 to contact the spring stop 44 without being substantially compressed.
- the damping spring 42 and the drive spring 43 are switched such that the damping spring 42 is located within the drive spring 43 with the drive spring 43 surrounding both the damping spring 42 and a portion of the casing 45.
- the spring rate of the drive spring 43 remains greater than the spring rate of the damping spring 43.
- the spring rate of the springs may be adjusted by, for example, using different materials, different number of coils, different coil sizes, etc.
- a lancing device 110 includes a drive spring 143 located within a plurality of damping springs 142a,b. Similar to the above embodiment, the damping springs 142a,b are attached to both a lancet holder 136 and a spring stop 144, while the drive spring 143 is attached only to the lancet holder 136. hi alternative embodiments, the drive spring 143 is free-floating along a shaft (not shown) and is not attached to the lancet holder 136. hi the embodiment illustrated in FIG.
- the spring rate of each of the damping springs 142a,b is substantially lower than the spring rate of the drive spring 142.
- the operation of the lancing device 110 is substantially similar to that described above with respect to FIGS. 7a-c except that, in the embodiment of FIG. 8a, a plurality of damping springs 142a,b is used to return a lancing mechanism 129 from the puncture position to the resting position.
- a lancing device 210 includes a damping spring 242 located within a plurality of drive springs 243a,b. Similar to the above embodiments, the damping spring 242 is attached to both a lancet holder 236 and a spring stop 244, while each of the plurality of drive springs 243 is attached only to the lancet holder 236. In this embodiment, the spring rate for each of the plurality of drive springs 243 a,b and the spring rate for the damping spring 242 may be substantially equal.
- a lancing mechanism adapted to move between a resting position, a cocking position, and a puncture position comprising: a lancet holder adapted to receive a lancet; a shaft attached to the lancet holder; at least one drive spring surrounding at least a portion of the shaft, the at least one drive spring being adapted to drive the lancing mechanism from the cocking position to the puncture position; at least one damping spring being adapted to move the lancing mechanism from the puncture position to the resting position, the at least one drive spring being located at least partially within the at least one damping spring.
- a lancing mechanism adapted to move between a resting position, a cocking position, and a puncture position comprising: a lancet holder adapted to receive a lancet; a shaft attached to the lancet holder; at least one damping spring surrounding at least a portion of the shaft, the at least one damping spring being adapted to move the lancing mechanism from the puncture position to the resting position; at least one drive spring being adapted to drive the lancing mechanism from the cocking position to the puncture position, the at least one damping spring being located at least partially within the at least one drive spring.
- a lancing device comprising: a main housing including a spring stop, the main housing forming an inner cavity enclosing a portion of a lancing mechanism, the lancing mechanism including a lancet holder adapted to receive a lancet and a shaft attached to the lancet holder, the lancing mechanism further including at least one drive spring being detached from the spring stop, the at least one drive spring being adapted to drive the lancing mechanism from a cocking position to a puncture position, the lancing mechanism further including at least one damping spring being attached to the spring stop, the at least one damping spring being adapted to move the lancing mechanism from the puncture position to a resting position; and a movable housing adjacent the main housing, the movable housing being adapted to move the lancing mechanism from the resting position to the cocking position.
- the lancing mechanism further includes a casing extending from the lancet holder and surrounding at least a portion of the shaft, the casing adapted to partially separate the at least one drive spring from the at least one damping spring.
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Hematology (AREA)
- Surgery (AREA)
- Biophysics (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dermatology (AREA)
- Manufacturing & Machinery (AREA)
- Pain & Pain Management (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US70534905P | 2005-08-04 | 2005-08-04 | |
PCT/US2006/030180 WO2007019202A2 (fr) | 2005-08-04 | 2006-08-03 | Petit dispositif a lancette |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1912567A2 true EP1912567A2 (fr) | 2008-04-23 |
EP1912567B1 EP1912567B1 (fr) | 2012-12-26 |
Family
ID=37452587
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06800686A Not-in-force EP1912567B1 (fr) | 2005-08-04 | 2006-08-03 | Petit dispositif a lancette |
Country Status (5)
Country | Link |
---|---|
US (3) | US8617195B2 (fr) |
EP (1) | EP1912567B1 (fr) |
AR (1) | AR057484A1 (fr) |
TW (1) | TW200724103A (fr) |
WO (1) | WO2007019202A2 (fr) |
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USD910849S1 (en) * | 2019-05-08 | 2021-02-16 | Sterilance Medical (Suzhou) Inc. | Mini-type safety lancet |
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- 2006-08-03 WO PCT/US2006/030180 patent/WO2007019202A2/fr active Application Filing
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2013
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- 2013-12-17 US US14/109,395 patent/US8864783B2/en active Active
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Also Published As
Publication number | Publication date |
---|---|
WO2007019202A2 (fr) | 2007-02-15 |
EP1912567B1 (fr) | 2012-12-26 |
US8617195B2 (en) | 2013-12-31 |
WO2007019202A3 (fr) | 2007-06-14 |
TW200724103A (en) | 2007-07-01 |
US8864783B2 (en) | 2014-10-21 |
US20140107689A1 (en) | 2014-04-17 |
US9375175B2 (en) | 2016-06-28 |
US20110118771A1 (en) | 2011-05-19 |
AR057484A1 (es) | 2007-12-05 |
US20140074139A1 (en) | 2014-03-13 |
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